Dental molding plate



1,613,384 Jan. 4, 1927. s. DOBRIK DENTAL MOLDING PLATE Filed June 8,1925 2 Sheets-Sheet 1 W MM? //7 ue/yfaz' Jan. 4,1927. 1,613,384

s. DOBRIK DENTAL MOLDING PLATE Filed June 8. 1925 2 Sheets-Sheet 2Patented Jan. 4, 1927.

TEN T SAMUEL DOBBIK, OF BROOKLYN, NEW YORK.

DENTAL .MOLDING .PLATE.

A -ppl-icatien filed June 8, 1925.

My invention relates to ,a new and .improved molding plate constructionto be used for dental purposes. I

One ofthe objects of my invention is to provide a molding plate whichshall be sanitary, which can'be readily adapted for the individual mouthwhose teeth areto be restored and whichcan.beireadily :shaped by Such aplate may be made of any material which can be easily cut, as,forex-ample, a

waxy material.

Another object of my invention-is to devise an article oftlllSCllllTtlGtel which can be readily manipulated and to which .a metalholding handle'can be afiixed in a secure manner.

Anothenand important object of my invention is to provide a fundamentalform or type of plate which can be used for taking impressionsrof thefull upper jaw or of the full lower jaw, upon being suitably shaped bythe dentist for the purpose for which it is intended.

Other objects of my invention will be set forth inthe followingdescription and drawings which illustrate a preferred "embodi- V mentthereof, it being understood that the above general statement of theobjects of my invention is intended to generally, illustrate the sameand not to limit it in any manner.

Fig. 1 is a perspective view ofanmolding plate to be used for moldingthe upper jaw.

Fig. 2 is a'perspective view of the holding member to be used incombination with the plate shown inFig. 1.

Fig. 3 is an inverted .plan view showing the holding handle appliedtothe molding plate and the holding member therefor.

Fig. i is the same as Fig. 1 butshowing a portion out the molding platecut awayso as to enable the device to the used .witha relatively shallowjaw.

Fig. 5 is the same :as Fig. t but showing the central portion of theholding plate cut away so as to enable the device to be used as amolding plate for the lower jaw, this figure also showing a part of theplate cut away so as to enable the device to be used for a relativelyshallow jaw.

Fig. 6 is a perspective view showing the device shown in Fig. 5 in theinverted position and with fewer of the corrugations cut away.

Fig. 7 is a perspective view of a molding Serial .No. 35,526.

plate to be used asa partial tray for the sideportion of theupper orlower .j aw.

Flg. 81s a perspective viewof aholding member to be used in combination.withthe plate. shown in Fig. 7.

Fig. 9 is a top view showing the-holding handle and holding memberappliedtoithe device shown in 'Fig. 7. [the dentist to accommodate itsuse to the mouth of the patient who lsbeing treated.

Fig. :10 is a sectionon-the line 10.10 of Fig. 9.

Hitherto in taking impressions tor dental v purposes, for the purpose'of making bridge workand for other dental work where-restoration ofteeth is necessary, it has been customary to use .a hollow,metal moldingplate in which the impression material was placed, so that aproperimpression could-be taken. Plates of this kind werenot sanitary in thatthey were used again and againand in addition, since :the mouths of.various patients are more or iless'shallow, adental plate made ofmetalwas necessarily adapted for the deepest type of mouth so that itproved uncomfortable for patients having relatively shallow mouthsandithis also in terfered with the accuracy of the work taken. According:to any invention, the

molding plate is made of any-material which poses for which it is used,consistent. a plate 7 having a peripheral portion 11, arentral'or palateport1on2 and :a depending wall'S having a series of corrugated portionsseparated by corrugation linesy. Theperipheral portion 1 isprovided-with relatively ,-.raised extensions 5, 6 and 7 separated fromthe main peripheral portion 1 by slotsso that the corresponding tonguesof the holding handle can be vinserted between the :periph eral portion1 andthe said raised portions 5, 6 and 7.

.To enable themolding plate toihe suitably held by the dentist, aholding member '8 is provided and this holding member 8 is also providedwith relatively raised side shoulders 9 and 10.

This holding member 8 is provided with depending walls 11' and 12 sothat it can be fitted upon the molding plate 1.

A handle H is provided with tongues 14, 15 and 16 so that when thehandle H is thrust into position as shown in Fig. 3, the tongues 14, 15and 16 engage the molding plate 1 and the holding member 8, as shown inFig. 3. The central tongue 16 passes underneath the central shoulder ofthe molding plate 1 and the end tongues 14 and 15 pass underneath theshoulders 6 and 9 on one side and the shoulders and 7 on the other side,so that a firm frictional fit is secured which could not be securedwith. the sameadvantageous effect if the holding member 8 were omitted.

The molding plate shown in Fig. 1 is adapted for taking an impression ofthe entire upper jaw of the deepest type.

If the upper jaw of the mouth of the patient is more shallow than thedeepest type before mentioned, then, more or less of the corrugations ofthe side walls 3 can be cut away. 'I have not illustrated indetail theappearance of the fundamental type of plate shown in Fig. 1', as thecorrugated portions of the depending walls 3 are gradually cut away,because this is unnecessary for a clear understanding of my inventionbecause it can be readily appreciated that the skilled dentist will cutaway more or less of these corrugated portions, depending upon the mouthof the patient who is being treated.

In order to adapt this plate for. taking an impression of the entirelower jaw, the palate portion 2 can be cut away so as to make a deviceof the type shown in F 5 and 6, the type shown in Fig. 6 having less ofthe side walls cut away so that it is intended for a deeper type of jawthan the device shown in Fig. 5.

If it is desired to take a small impression of only a part of one of thejaws, then the device shown in Figs. 7-10 inclusive can be employed. Themolding plate 17 shown in Fig. 7 has a single raised shoulder 18 andside of the shoulder 20, thus providing for a firm frictional engagementwhere only a single holollng tongue is used.

The purpose of usmg the holding member 7 the material of which themolding plate is made is not stiff and rigid, as if metal were used forthis purpose. However, when the holding plate 8 is applied to themolding plate 1, the respective ends of the tongues 14:

and 15 are firmly forced against the upper surface of the holding plate8 when the tongues are mserted into but ge -like extensions 6 and 7 sothat a firm hold is secured.

The holding plate 19 also enables the handle H to firmly hold the smallmolding plate 17.

I have shown a preferred embodimentof my invention, but it is clear thatnumerous changes and omissions could be made without departing from itsspirit.

Experience has shown that'the corrugations previously described in thesaid molding plates aid, a dentist materially in enabling him to securea more accurate impression, because these corrugations enable the plateto hold the impression material in one solid mass so that the impressionmaterial does not break into parts, which fre quently occurs when theplate is not properly shaped.

I claim 1. In combination, a dental molding plate having bridge-likeextensions at the front thereof and at the sides thereof, and a holdingplate adapted to fit over said molding plate and having bridge-likeextensions corresponding to the before mentioned extensions upon thesides of the said molding plate.

In combination with the device specified in claim 1, a handle havingtongues adapted to engage the said molding plateunder the saidextensions thereof, the said tongues being adapted to firmly bearagainst the exterior of the said holding plate.

3. A molding plate having a bridge-like extension, a holding plateadapted to fitover the said molding plate and having a second bridgedikeextension corresponding to the first bridge-like extension. 7

In testimony whereof I affix my signature.

SAMUEL DO'BRIK.

